Builds and Squad Synergies Explained
What a build is in this game
You do not control aim, movement of your squadmates, or ability timing — the survivors “aim and shoot on their own,” in the studio’s words. What you control is composition and selection. So a build is three things:
- Which three survivors you field, and which one leads
- Which single damage type you stack toward
- Which weapon and ability evolutions you take on the level-up screen
Everything else is execution of those three decisions.
Synergies are the reason composition matters
Before 1.0, each survivor had three cross-survivor synergies. Version 1.0 raised it to four, and the fourth is different in kind:
we’re increasing the number of cross-Survivor synergies for each character to four! Three of these are tied to abilities, but the fourth will work independently of them.
On top of that, every survivor’s skill tree gained, in 1.0, “2 new synergy nodes, 2 passive improvement nodes, and one passive node with a bonus for the whole team, provided the said Survivor is present.”
Read that last clause carefully, because it is the single most important structural fact about building in this game: a survivor buffs your other survivors just by being in the squad. You do not have to invest in them. That turns squad composition from “pick my three strongest” into a real optimisation problem — and it is why the tier list ranks Ranger first despite her being a support.
Stack one damage type
The most common build mistake is spreading damage types. Tags are threshold-scaled: the published example is Ice, whose 10+ effect chance is “5% +1% for every tag over 10.” Below 10 tags you get very little; above it, returns compound.
The achievement Going All In wants a single damage type tag at 30 or higher. That is the game telling you how deep the stacking is meant to go. Full detail in stats and systems.
There are exactly two reasons to spread instead:
- The Power Is Yours! — deal five different damage types within one second
- Emotional Damage! — complete a Default run dealing no elemental damage at all
Both are achievement runs, not builds you would choose for power.
What 1.0 changed about weapons
Three balance changes altered how builds perform, and they all push the same direction:
| Change | Effect on builds |
|---|---|
| Most weapon attacks no longer lose damage on penetration | Multi-hit and piercing lines got substantially better |
| Burst and multi-projectile attacks roll crit once for the whole group rather than per projectile | Shotgun-style and rocket damage became far less swingy — better floors, lower ceilings |
| Boss base HP +25%, elite spawn chance up, basic zombie intensity down | Single-target damage matters more; pure crowd-clear matters less |
If you played during Early Access and your old build feels worse in 1.0, that third row is usually why. The game asks more of you against elites and bosses now, which is also what makes Boss Rush a real test rather than a victory lap.
Evolutions
Weapons evolve through tiers, and the achievement Three Times Three asks you to “evolve three different weapons into their third tier forms” in a single run — so three simultaneous tier-3 weapons is an achievable target, not a theoretical one. There is a parallel ability achievement, Come At Me Bro: evolve four different abilities in one run.
Some evolutions are branching choices. The most-searched one by far is Thousand Cuts or Windcutter — a fork players hit early and find almost nothing written about. Both sit on the Slashing line, and the 1.0 penetration change favours the multi-hit side of the split. See weapons for the evolutions the studio has actually named.
Item and slot limits
Two achievements bracket how much you can carry: Gear of War wants six items equipped in a single run (raised from five in an October 2024 patch), and Eye Candy wants five abilities active at the same time. Those are your practical ceilings.
You can also shape what you are offered. Item Pool Customization removes items from your runs entirely before you start, and the level-up screen offers lockdown, banish and reroll — the achievement Pro Gamer Move wants all three used on the same selection screen. Banishing dead items is the most underused build tool in the game: a smaller pool means better odds of drawing what your build needs. One caution from the patch notes — swapping an item out removes its effects, so it is not free.
Squad templates worth understanding
Rather than prescribe exact loadouts the studio has never published numbers for, here is what the mechanics support:
- Turret control — Engineer anchored, stacking turret abilities. The achievement Yet Another Zombie Defense (three different turret types deployed at once) exists specifically to signpost it, and turret squads were the most-published composition of the launch fortnight.
- Single-type elemental — Mechanic or Pyro anchored, everything funnelled into Ice or Fire to push a single tag past 30.
- Support-forward — Ranger in the squad for the squad-wide Critical and Luck buff plus healing, with two damage survivors around her.
- Solo leader — one survivor, no squad. Required for The Lone Wolf, You And What Army?, The Terminator and Death is Approaching, and the hardest way to play the game.
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